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Showing results for tags 'distributed control system'.
Found 127 results
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Is there any way to monitor ethernet/ip bus, states or faults and to make an alarm to the panel alarmlist. I am using IO-stations (1734-AENTR) and I would like to monitor somehow the system. I feel that reading the slot status of the 1734-AENTR device is not enough, because it is not possible to monitor all the cards in a slot. How to get alarm on a screen if I lose any station on the ethernet/ip bus?
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Hi: I need to change an old PLC with NX1p2 to control 3 servo motor by means of Analog Outputs couple with encoders, My job is to change the PLC only. So the servo drives and drivers are untouchable (No budget and involve too much mechanical works). I observed that Sysmac Sttudio Axes setting has this: Servo Axes, Encoder axes, Virtual Servo Axis and Virtual Encoder Axes. I believe the Encoder Axes couple with Analog Output is able to to do the Job? If so, what function block should i use? If no, do any body have a suggestion of any function block i can use? Thanks
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Hello I am trying to communicate a CJ1M with a CJ1W-EIP21 Card, with a Logix Control, but I have not been successful, what I am looking for is to read data, from the OMRON and see it in the Logix Control, but I have not been able to establish communication, I am looking for someone You will already have a functional example, with the backups of both PLC'S, to be able to observe how they made the configuration. Thank you for your support Greetings
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I'm having trouble with some Powerflex 525 drives. Right now what I need to do is run them manually from the keypad to test conveyor belts. Is there a way to do this and if so how? Thanks in advance.
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Hi Everyone, I have NT31C-ST142-V2 and it has a prompt of "System Program not exist or incorrect." I am trying to transfer via NT Series System Installer but I am getting a time-out error. I have Xm2S-09 serial cable with ATEN serial-to-USB cable.I know it is not broken since I can still Upload/download on a CJ2 PLC. I just want to know what other things I can do upload a systemprogram. I have seen a comment on this site that he remove the battery then tried to upload again. NT is almost 15 years old. I have a back-up program. I can't seem to upload by this time for pictures of theH MI and the screenshots of software .
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It's been quite the while since I have had to restore an SE network distributed application. I'm trying to get it restored in the distributed application manager but when it starts it fails. There's a log and it tells me "Unable to restor FactoryTalk Directory." Anybody run into this problem and have any solutions? Thanks.
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Hello Everyone. We have Schneider TM241 PLC Along with Citect SCADA System at 100MWp Solar Power Plant to monitor and control various equipments like Inverters, Switch-Yard, MFMs, Weather Monitoring Systems etc... Government Authority here asked every solar plant to control the generation as per the instructions by Load Dispatch Center, for that we need to implement logic to control Generation as per requirement. For that we are controlling generation from inverters by giving them generation setpoints calculated by PLC using PID function. But we are facing one problem while using PID. (FB_PID of Toolbox Library) Suppose we need to generate only 60MW out of 100MW. So we set PID setpoint to 60MW and according to that we get PID output and according to that PID output value we provide generation setpoint to every inverters. This system works very fine until the clouds comes into the picture. Now suppose Setpoint of PID is 60MW and PV is also near about 60MW, and suddenly large cloud comes over plant and block solar radiation. In this case generation comes down to 10MWp(or any value below 60MW), So output of PID will Increase and keep increasing and settle at the Maximum value. but without solar radiation generation value stays very down then Setpoint. Now suddenly Cloud moves and again solar radiation increase, but the PID output is maximum at that time so, Suddenly Generation goes from 10MW to near about maximum capacity (100MW) instead of 60MW, and then it will slowly comes down to 60MW. We need to rectify this generation shoot up when cloud moves. Anyone have idea how can we solve this problem or anyone have programmed PID in this kind of situation. Is there any function block available to do this correctly like function block of PID with two Reference or something like that... We are using TM241 which is CoDeSys based PLC.
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Hello everyone, I have a Kinetix 6000 CIP drive (unwind) and I need to control its speed by a PID controller. I have everything working except the MCD instruction doesn't pick up on the PID output value change. It changes the JOG speed, which I use to control the unwind, if I set the speed manually, which is slow. The PID changes the speed almost continuously. Any suggestions are welcome. This is how I'm attempting to control the speed: A1_r_JogSpeed = PID output value Thank you
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friends, forgive me for my english. I have a problem. omron nt620c panel cannot access the system menu. I reinstalled the system program through NT-SYSTEM INSTALLER. after which I get the message: no direct information is set !!! please use the support tool to set the pt control area and the pt notify area. go to the system menu does not work. I swing the corners of the screen as described in the manual. from a video from YouTube I realized that there should be a message connecting to host
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So I'm having trouble writing a FBD within my current program for a slitting line. I need to keep a constant tension on my web as it is being recoiled onto our recoiler. I wrote a simple program using a sensor to read the growing rate of the coil to get a radius and I have feedback on my torque on the recoiler motor. The simplest math for this application without getting into anything too fancy should be Tension(lbs)= Torque(ftlbs)/coil radius. only problem is when its less than a foot then my calculation is thrown off and it actually shows tension goes up until it reaches the one foot mark then it seems to scale correctly. Do I need to scale something else? Any help on this would be appreciated.
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colleagues, here I leave you an offline configured for the Q system greetings http://forums.mrplc.com/index.php?/files/file/1160-q-selection-tool/
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Q selection tool View File Q_PLC_offline_termékkiválasztó_szoftver_-_MELSEC_Q_Series_Selection_Tool.zip Submitter javiermorales Submitted 04/18/20 Category Demo Software
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Hello Guys, can anyone help me programming of FX5-4LC temperature control module with FX-5U80MT PLC. I want to Read present temperature value of each channel and want to set Temperature Set value from PLC.
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Still learning Sysmac Studio......how do I gain access to System Variables like 'PageIndex" so my PLC can be notified what Page the HMI is on? Also, how can I execute an 'Acknowledge All' from the PLC so I can reset the 'Alarm Viewer Popup' from my PLC? Thanks,
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Hi Every one, I have two 2198-P070 bus power supplies for that I’m using for four Kinetix drives, 2 drives per power supply, all controlled by one processor (5069-L350ERMS2). I have an enable contactor setup for each power supply for each set of drives. I have them configured as DC bus groups 1 and 2 respectively. I had the first set of drives working, setup inside the motion group, with no issues. When I added the second power supply and drives. I found that when I added them to the motion group I couldn’t get the enable contactor to close for the first set of drives. I f I took them out of the motion group and made them ungrouped then the first contactor would close but then I couldn’t get the contactor on the second set to close. Do you have any thoughts as to what I might be missing to get these to work? See the screen shots for more detail. Let me know what you think. Also, I have heard that only one motion group is allowed per PLC, but my question is : Can I use sevral axes and Power units in the same motion group?
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Getting this error while adding MC_TorqueControl. I want to control torque from HMI value. Using R88D-1SN08H-ECT drive and R88M-1M75030T-S2 Ac servo motor with NX1P2 PLC. Newbie Here. Please support. Error 1 The Axis parameter of the MC_TorqueControl instruction does not support single-axis position control axes. Program1 Section0 Row 6
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Hi all, I am trying to update the firmware of a NS12-TS01B-V2. I have downloaded the RecoverUpdate_8_95.exe (and someothers) from the myomron website. I have followed the instrucctions PDF, but when I switch on the HMI with the Compact Flash inserted, nothing happens: the screen is dark and the led is lit orange (not blinking). The compact flash is 1GB (not omron) and formated using a CJ2. I have been using this card in OMRON PLCs and HMIs for years without problems. I read in other topic than I guy had similar problems and he solved it using other computer and other unzipper program. I have tried it, but it did not work. After that, I tried to update it using the DIP switches, but I got more problems, because I got a Warning first, and later an Error, because I forced the installation of the Firmware of the NS8 (BANK1) instead of the NS12. However, the other BANK folder contains the FW for the NS5... Anyway, I could fix this error because previously I did a backup of the already installed system (V7.0). I would like to ask you to send me a BackUp of another NS12, using the "Manual Transfer", that should works. I need the 8.20 version or higher. Thanks a lot. My email is hector.moreno.lax@gmail.com
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Is it possible to view the values / states of all inputs, outputs and workbits (e.g. 64.00 through 64.15 on Omron CQM1 PLC) on a single screen or control panel within CX-Programmer software? I'm trying to troubleshoot some ladder logic that I wrote and need to know the values of 5 or 6 inputs/outputs/workbits simultaneously. Having to scroll up and down through my ladder logic repeatedly does not work well with code that changes state every 5-10 seconds or so. Any help is welcome.
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Hello We have just purchased some equipment with a Control Logix 5561 (1756-L61/B Rev 13.40). The compact flash card is missing from the unit but the seller says the unit was running in his facility prior to shipping. Does the 5561 have internal memory where a program is stored? Is the Compact Flash used only for recipes and persistent data? Thank you
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Hi everyone, I trying to develop a logic to control 6 motors. Two motors needs to working and four motor will be in stand by. When one of the two motors fail, one of the four motors will start to work. Another rule is, when one of the motors that is working reach the preset time of working, the controller will stop that motor and start another motor with low working time, and so on. I'm have difficult to solve this problem. Can someone help me, please? Best, R.
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Gentlemen and Ladies, This post might come off as generally lazy but this is purely in the interest of saving time. Our company has been building control panels for quite some time. I have been doing the design for about 10 years or so. We typically build Allen Bradley type control panels. Our main customers are water/wastewater so they are typically Compactlogix with basic IO. (AI, AO, DI, DO) modules. Recently i've been using the IO Wiring System modules. These save an incredible amount of time. However, they are quite big and require a decent amount of space. Our smallest control panel size is usually 36x36 and that is pretty tight. My question to all is, does anyone have a set of control panel drawings for an Allen Bradley compact logix system without these wiring modules? I am looking to create a smaller control panel, and I just haven't had much time lately to sit down and do the design. This is indeed a shortcut, but time has been limited on my end as of late. I apologize if this is out of line. Thank you,
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can anybody Know how to control stepper motor using PLC
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Hi, I am using PID function (PID operation instruction) from GX Works 3 library but it doesn't work. I set all necessary parameters (sampling time, direction and upper/lower limit values + KP, TI). My input PID_Par is array of 25 points (in manual is written: "*1When auto tuning is not used, the same number of points are occupied as when the step response method is used."). For example, in GX Works 2, PID function works ok. Did someone have similar problem? Does someone have mitsubishi library (GW Works 3) with PID function that works correctly? Regards Luka
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Hello,I am sizing a feeder circuit for a panel according to UL 508A and came into a question:My input current is of 76.5 A (considering all the loads), thus, it is fine for me to use a cable of 4 AWG (max. 85A @ 75 c).For the circuit breaker I did 76.5 A x 1.25 = 96 A and then I selected a breaker of 100A.My question is: Is it ok for me to keep this configuration according to UL 508A? 100A breaker + 4 AWG load side cableOr do I need to level up the cables?Thank you very much in advance!
